2011 base stereo question

[Raudy]

Hi I have a 2011 135 convertible. I know I am going to be told I missed this somewhere but I have been looking all over the site for some answers.

I have the base stereo.
2-tweeters by the sideview mirror
4-4" speakers
2- subs under front seats.

If I want to add an amp/sub, where is the easiest place to tap into the speaker wires to get a signal to the amp. There is a bundle of wires that runs behind the seat but I have no clue if any of these are correct to tap into.

Recommendations? it seems that 2010 and earlier cars are set up a bit differently?

Thanks guys and sorry if I missed the post before

[Dackelone]

IF you have speakers in the front doors AND also up by the side mirrors... you have the upgraded (HK ? ) sound system.

I have a 2010, 135i and I do not have the tweeters by the side mirrors. I have the base system.

[Technic]

This is a HiFi system... the HK would have 2 more tweeters in the rear panels and a center channel.

Check this thread for information about adding a sub to this system: http://www.e90post.com/forums/showth...hlight=diagram

[Raudy]

Thank you for the info showing that the base stereo in the 2011 135 cv is a hifi. Where is the amp located?

Thanks

[Dackelone]

I think its behind the left rear 1/4 pannel trim. Try a search and you will find pics.

[Raudy]

thanks

[gw135i]

Did you get through this upgrade. Thinking about the same path. Looking at the info now..
Thanks...